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# I cannot "implement" my move method.

It's asking me to implement my "move" method. and I am confused because I thought by coding:

"robot.move(direction: Direction.right)"

that is me implementing the move method. Can someone explain why the code challenge isn't accepting this.

test.swift
```class Point {
var x: Int
var y: Int

init(x: Int, y: Int) {
self.x = x
self.y = y
}
}

enum Direction {
case left
case right
case up
case down
}

class Robot {
var location: Point

init() {
self.location = Point(x: 0, y: 0)
}

func move(direction: Direction) {

switch direction {
case .up:
self.location.y += 1
case .down:
self.location.y -= 1
case .left:
self.location.x -= 1
case .right:
self.location.x += 1
}

}
}

Robot().move(in: Direction.left)
```

Full code that works, just did the challenge

```class Point {
var x: Int
var y: Int

init(x: Int, y: Int) {
self.x = x
self.y = y
}
}

enum Direction {
case left
case right
case up
case down
}

class Robot {
var location: Point

init() {
self.location = Point(x: 0, y: 0)
}

func move(_ direction: Direction) {
switch direction {
case .up:
self.location.y += 1
case .down:
self.location.y -= 1
case .left:
self.location.x -= 1
case .right:
self.location.x += 1
}
}
}
```

Remove `default: location`

First off your switch is exhaustive so it's not needed and secondly you are saying the default case location which is a type of Point(which is nil at the point, which will never be called but could crash the app if it was)

I have removed the default altogether. But my code still isn't passing the challenge. It's still asking for me to "implement the move method"

and I simply don't know what else to do.